25047697872 has 40 divisors (see below), whose sum is σ = 68112163360. Its totient is φ = 7909799040.

The previous prime is 25047697849. The next prime is 25047697897. The reversal of 25047697872 is 27879674052.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13731379 + ... + 13733202.

It is an arithmetic number, because the mean of its divisors is an integer number (1702804084).

Almost surely, 2^25047697872 is an apocalyptic number.

It is an amenable number.

25047697872 is an abundant number, since it is smaller than the sum of its proper divisors (43064465488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25047697872 is a wasteful number, since it uses less digits than its factorization.

25047697872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27464611 (or 27464605 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 25047697872 in words is "twenty-five billion, forty-seven million, six hundred ninety-seven thousand, eight hundred seventy-two".